Power-hammer



(No Model.)-

A.- BEA'UDRY. POWER-HAMMER.

N0. 244,370. l Patented July 19,1881.

"QC/*flle 55 es.

UNITED STATES 'PATENT OFFICE.

ALEXANDER BEAUDRY, OF BOSTON, MASSACHUSETTS.

POWER-HAMM ER.

SPECIFICATION forming part of Letters Patent No. 244,370, dated July 19,1881.

Application filed March 3, 1881.

(No model.)

To all whomA it may concern:

Be it known that I, ALEXANDER BEAUDRY, a citizen of the United States,residing at Boston, in the county of Suffolk and State of Massachusetts,have invented certain new and useful Improvements in Power-Hammers and Ido hereby declare that the sameare fully described in the followingspecification, and illustrated in the accompanying drawings.

This invention relates to improvements on power-hammers, and it iscarried out as follows, reference being had to the accompanyingdrawings, on which- Figure 1 represents a plan View. Fig. 2 represents alongitudinal section on the line A B. (Shown on Fig. l.) Fig. 3represents a crosssection on the line C D. (Shown on Fig. 2.)

Similar letters refer to similar parts wherever they occur on thedifferent parts of the drawings.

a a are are the frames, provided with suitable stay-bolts b b b, asshown.

c is the sole-plate, to which the lower ends of the frames c a aresecured by means of suitable bolts and screws, and d is a piece of woodor other suitable material interposed between the bottom of the framesaa. and the top of the sole-plate c.

e is the anvil, securedto the sole-plate c, and provided in its upperend with the die e'.

f is the vertically-movable ram, having the dief in its lower end, asshown.

g g are vertical guides for the ram f, which guides are secured to theforward ends of the frames a a, as shown. The ram f is provided with avertical and central cylindrical recess, h, which is closed at the topby means of the perforated plate or cover i secured to the top of theram f by means of suitable screws. In the cylindrical recess h. islocated a pair of coiled springs, 7c and l, one above and the otherbelow the collar, nut, or projection m", thatis secured firmly to thelower end of the rod m,

which passes freely up through the perforated cover t', as shown. Theupper end of the rod m is jointed to the forward end of the spring n,that extends backward above the frames a a, and is bent, as shown, andsecured ,to the rear end of the tail-piece o, that forms a rearextension of the frames a c, and is fastened to the latter by means ofscrew-bolts p p. The

rear end of the spring nis secured in an adjustable manner to thetail-piece o by means of the screw-bolts Q and Q passing through holesin the tail-piece, and provided on the under side with the respectivenuts g and q', as

shown.

R is a socket-head on the upper end of the screw-bolt Q, and B. is asimilar socket-head on the upper end of the screw-bolt Q. The rear endof the spring n is inserted into the said socket-heads R and R', andsecured therein by means of the set-screws r and r or equivalent means.

About midway between the boltsQ and Q is located on the tail-piece o therocker-piece S, upon which the spring n rests, as shown on Fig. 2. Bythis arrangement I am enabled to adjust the position of the spring u asmay be required in hammering thick or thin forgings. In the former caseI loosen the nut q and tigi. ten the nut q, thereby causing the forwardend of the springmas well as the ram j, to be raised. In the latter caseI loosen the nut q and tighten the nut q', thereby causing the forwardend of the spring n and its ram f to be lowered more or less, as maybedesired. The spring u and the ram j' are set in a reciprocating motionup and down by means of the crank-shaft s and the connecting-rod t, theupper end of which is jointed to the couplingpiece u, secured to the.spring n, by means of the-set-screw u or equivalent device.

T is a right-and-left-screw-threaded nut uniting the screw-threaded endst and t of the rod t, by means of whichthe latter may be lengthened orshortened in proportion to the adjustment of the rear end of the springn, as above-set forth. v

s' s are bearings for the crank-shaft s, which bearings are secured in asuitable manner to the rear of the frames a a, as shown.

v is a balance-wheel on the crank-shaft s, and w is a pulley on saidshaft, which is set in a rotary motion by means `of belt-power, asusual.

The operation of this my improvedbelt-hainmer is as follows: Byimparting a rotary m0- tion to the driving-shaft s the connecting-rodtis given a vertically-reciprocating motion, and with it the spring n,and by means of the rod m, its collar m', and the coiled springs k andiIOO the ram fis caused to ascend and descend in rapid succession with apowerful and yielding stroke, and in such a manner that the ram willascend immediately after the blow is given on the forging, this beingcaused by the compression of the upper spring, k, during the descent ofthe ram. The compression of the lower spring, l, during the latterpartei' thc upward stroke tends to increase the force of the blow of theram.

This improved hammer can he run without much frictional resistance, andconsequently with very little power as compared with other belt-hammersnow in use.

What I wish to secure by Letters Patent and claim is- 1. In combination,the frames a a., anvil e,

reciprocating ram f, with its springs la and l, the rod m m', U-shapedspring at, rotary crankshaft s, and connecting-rod t, joined in itsupper end to the spring n btween its fixed and free ends, as and for thepurpose set forth.

2. In combination with the spring u and tailpiece o, the adjustablescrew-bolts Q Q', nuts q q', socket-heads R R', and rocker-piece S, forthe purpose of adjusting the rise of the ram f above the anvil e, asdescribed.

In testimony whereof I have axed my signature in presence of twowitnesses.

ALEXANDER BEAUDRY.

Witnesses ALBAN ANDRN, HENRY GHADBOURN.

